Breaker of reinforced glass

ABSTRACT

The present invention relates to a breaker of a reinforced glass, including a power source for driving a breaking cylinder to compress a strong spring. When the compressed strong spring is released, the strong spring may produce an instantaneous bounce force so as to drive the breaking cylinder to strongly hit and break the reinforced glass, thereby breaking the reinforced glass quickly and efficiently.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a breaker of a reinforced glass, andmore particularly to a breaker that may produce an instantaneous bounceforce to drive the breaking cylinder to strongly hit and break thereinforced glass, thereby breaking the reinforced glass quickly andefficiently.

2. Description of the Related Art

The closest prior art of which the applicant is aware is disclosed inthe Taiwanese Patent Publication No. 363426, which discloses aconventional breaker which includes a box fixed on a corner of areinforced glass window. The box contains a slide track which is fittedwith a slide base which has a front side secured with a motor which hasa rotation shaft connected to a gravity rod that is rested on thereinforced glass window. The slide track has a rear side provided with astrong spring pushing the slide base.

Thus, when an accident happens, and it is necessary to hit and break thereinforced glass window, the motor may drive the gravity rod to rotateat a high speed, so that the conic head of the gravity rod may be pushedby the strong spring to drill a hole in the reinforced glass window, soas to break the reinforced glass window, thereby achieving the purposeof escape.

However, the conventional breaker of a reinforced glass window has thefollowing disadvantages.

1. The strong spring is disposed at a compressed state during a longperiod of time, so that the strong spring easily produces an elasticfatigue, thereby failing the breaker.

2. The conic head of the gravity rod pushed by the strong spring needsto take a great deal of time so as to drill a hole in the reinforcedglass window, thereby wasting time of escape.

3. The conic head of the gravity rod pushed by the strong spring canonly drill a small hole in the reinforced glass window, and the user hasto use other article to break and enlarge the small hole for escape,thereby wasting time of escape.

SUMMARY OF THE INVENTION

The present invention has arisen to mitigate and/or obviate thedisadvantage of the conventional breaker of a reinforced glass window.

The primary objective of the present invention is to provide a breakerthat may produce an instantaneous bounce force to drive the breakingcylinder to strongly hit and break the reinforced glass, therebybreaking the reinforced glass quickly and efficiently.

In accordance with the present invention, there is provided a breaker ofa reinforced glass, comprising: a body, having a first end formed with aclosed end, and a second end having an end face formed with a slidegroove and a through hole in parallel with each other, a breakingcylinder slidably mounted in the through hole, an elastic member mountedin the breaking cylinder and rested on the closed end of the body, aslide base slidably mounted in the slide groove, a power source mountedin the body for moving the slide base, a clutch device mounted on theslide base and detachably locked on one end of the breaking cylinder.

Preferably, the closed end of the body is sealed by a support plate, theclosed end of the body is formed with a receiving groove communicatedwith the slide groove, the closed end of the body is formed with a guidegroove that is communicated with and has an inner diameter greater thanthat of the through hole, and a connecting hole is connected between theslide groove and the through hole of the body.

Preferably, the power source is mounted in the receiving groove of thebody, and has one end provided with a ball screw that is directed towardthe slide groove, the ball screw may be driven by the power source torotate, the ball screw is positioned and supported in the slide grooveby a bearing, the slide base is slidably mounted in the slide groove,and has a center formed with a screw hole screwed on the ball screw, sothat when the ball screw is rotated by the power source, the slide basemay slide on the ball screw by guidance of the slide groove.

Preferably, the clutch device is a clutch swing bar, the slide base hasone side formed with two pivot ears received in the connecting hole ofthe body for pivoting the clutch swing bar which may swing horizontallyin the connecting hole of the body, the slide base is formed with alongitudinally extended cutout located between the two pivot ears, aguide rod has a first end inserted into the cutout of the slide base,and a second end screwed on a side face of the body, the clutch swingbar has a first end pivotally mounted between the two pivot ears of theslide base, and a second end having a first side formed with a protrudedstop portion and a second side formed with a protruded guide portion,the stop portion of the clutch swing bar has a free end formed with acircular nose end, the guide portion of the clutch swing bar has a freeend pivoted with a roller, the stop portion of the clutch swing bar isrested on the end face of the breaking cylinder, and the roller of theguide portion of the clutch swing bar is rested on the guide rod of theslide base.

Preferably, the breaking cylinder is slidably mounted in the guidegroove and the through hole of the body, and has a closed first endprovided with a striking needle, and a second end having an outerperiphery formed with an annular locking flange that may be rested andlocked in the guide groove of the body, and the breaking cylinder has aninner portion formed with a chamber for receiving the strong springwhich is rested on a support plate.

Further benefits and advantages of the present invention will becomeapparent after a careful reading of the detailed description withappropriate reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded perspective view of a breaker of a reinforcedglass in accordance with a preferred embodiment of the presentinvention;

FIG. 2 is a plan cross-sectional assembly view of the breaker of areinforced glass as shown in FIG. 1; and

FIG. 3 is a schematic operational view of the breaker of a reinforcedglass as shown in FIG. 2 in use.

DETAILED DESCRIPTION OF THE INVENTION

Referring to the drawings and initially to FIGS. 1 and 2, a breaker of areinforced glass in accordance with a preferred embodiment of thepresent invention comprises a body 10, a power source 20, a slide base30, a clutch swing bar 40, a breaking cylinder 50, and a strong spring60.

The body 10 is a rectangular base, and has a first end face and a secondend face. The first end face of the body 10 is formed with a receivinggroove 11, and a guide groove 13 located in parallel with the receivinggroove 11. The second end face of the body 10 is formed with a slidegroove 12 that is communicated with the receiving groove 11 and has aninner diameter smaller than that of the receiving groove 11. The secondend face of the body 10 is also formed with a through hole 14 that iscommunicated with the guide groove 13 and has an inner diameter smallerthan that of the guide groove 13. The through hole 14 is located inparallel with the slide groove 12. The second end face of the body 10 isformed with a connecting hole 15 that is connected between the slidegroove 12 and the through hole 14.

The power source 20 is received in the receiving groove 11 of the body10, and has one end provided with a ball screw 21 that is directedtoward the slide groove 12. The ball screw 21 may be driven by the powersource 20 to rotate. The ball screw 21 is positioned and supported inthe slide groove 12 by a bearing 22.

The slide base 30 is slidably mounted in the slide groove 12, and has acenter formed with a screw hole 31 screwed on the ball screw 21, so thatwhen the ball screw 21 is rotated by the power source 20, the slide base30 may slide on the ball screw 21 by guidance of the slide groove 12.The slide base 30 has one side formed with two pivot ears 32 received inthe connecting hole 15 of the body 10 for pivoting the clutch swing bar40, so that the clutch swing bar 40 may swing horizontally in theconnecting hole 15 of the body 10.

The clutch swing bar 40 has a first end pivotally mounted between thetwo pivot ears 32 of the slide base 30, and a second end having a firstside formed with a protruded stop portion 41 and a second side formedwith a protruded guide portion 42. The stop portion 41 of the clutchswing bar 40 has a free end formed with a circular nose end. The guideportion 42 of the clutch swing bar 40 has a free end pivoted with aroller 420.

The slide base 30 is formed with a longitudinally extended cutout 33located between the two pivot ears 32. A guide rod 34 has a first endinserted into the cutout 33 of the slide base 30, and a second endscrewed on a side face of the body 10.

The breaking cylinder 50 is slidably mounted in the guide groove 13 andthe through hole 14 of the body 10, and has a closed first end providedwith a striking needle 51, and a second end having an outer peripheryformed with an annular locking flange 52 that may be rested and lockedon a shoulder formed between the guide groove 13 and the through hole 14of the body 10. The breaking cylinder 50 has an inner portion formedwith a chamber 53 (see FIG. 2) for receiving the strong spring 60. Asupport plate 100 is secured on one side of the body 10, so that thestrong spring 60 may be compressed between the support plate 100 and thewall of the chamber 53 of the breaking cylinder 50.

As shown in FIG. 2, when the breaking cylinder 50 is mounted in thethrough hole 14 of the body 10, the stop portion 41 of the clutch swingbar 40 is rested on the end face of the breaking cylinder 50, and theroller 420 of the guide portion 42 of the clutch swing bar 40 is restedon the guide rod 34 of the slide base 30.

In use, referring to FIGS. 2 and 3 with reference to FIG. 1, the throughhole 14 of the body 10 is directed toward the reinforced glass to behit. The ball screw 21 may be driven and rotated by the power source 20,so that the slide base 30 may be driven by the ball screw 21 to slide inthe guide groove 12 toward the power source 20, and the clutch swing bar40 may be moved with the slide base 20 to move toward the power source20, whereby the roller 420 of the guide portion 42 of the clutch swingbar 40 may slide along the guide rod 34 of the slide base 30, and thestop portion 41 of the clutch swing bar 40 may push the breakingcylinder 50 to move toward the strong spring 60, thereby compressing thestrong spring 60 as shown in FIG. 3.

When the slide base 30 is moved to a predetermined position, the guideportion 42 of the clutch swing bar 40 is moved outward from the guiderod 34 of the slide base 30, so that the guide portion 42 of the clutchswing bar 40 is located at a suspending state as shown in FIG. 3,whereby the force of the stop portion 41 of the clutch swing bar 40applied on the breaking cylinder 50 is removed, so that the restoringforce of the strong spring 60 applied on the breaking cylinder 50 mayforce the clutch swing bar 40 to pivot about the pivot ears 32, therebydetaching the breaking cylinder 50 from the stop portion 41 of theclutch swing bar 40, whereby the breaking cylinder 50 may be forced tomove outward from the through hole 14 of the body 10 by the restoringforce of the strong spring 60, so that the striking needle 51 of thebreaking cylinder 50 may be pushed to instantaneously strike and breakthe reinforced glass quickly and strongly, and the broken reinforcedglass may be hit by the end face of the breaking cylinder 50, therebyforming a larger opening to facilitate escape of the people.

Although the invention has been explained in relation to its preferredembodiment as mentioned above, it is to be understood that many otherpossible modifications and variations can be made without departing fromthe scope of the present invention. It is, therefore, contemplated thatthe appended claim or claims will cover such modifications andvariations that fall within the true scope of the invention.

What is claimed is:
 1. A breaker of a reinforced glass, comprising: abody, having a first end formed with a closed end, and a second endhaving an end face formed with a slide groove and a through hole inparallel with each other, a breaking cylinder slidably mounted in thethrough hole, an elastic member mounted in the breaking cylinder andrested on the closed end of the body, a slide base slidably mounted inthe slide groove, a power source mounted in the body for moving theslide base, a clutch device mounted on the slide base and detachablylocked on one end of the breaking cylinder.
 2. The breaker of areinforced glass in accordance with claim 1, wherein the closed end ofthe body is sealed by a support plate, the closed end of the body isformed with a receiving groove communicated with the slide groove, theclosed end of the body is formed with a guide groove that iscommunicated with and has an inner diameter greater than that of thethrough hole, and a connecting hole is connected between the slidegroove and the through hole of the body.
 3. The breaker of a reinforcedglass in accordance with claim 2, wherein the power source is mounted inthe receiving groove of the body, and has one end provided with a ballscrew that is directed toward the slide groove, the ball screw may bedriven by the power source to rotate, the ball screw is positioned andsupported in the slide groove by a bearing, the slide base is slidablymounted in the slide groove, and has a center formed with a screw holescrewed on the ball screw, so that when the ball screw is rotated by thepower source, the slide base may slide on the ball screw by guidance ofthe slide groove.
 4. The breaker of a reinforced glass in accordancewith claim 2, wherein the clutch device is a clutch swing bar, the slidebase has one side formed with two pivot ears received in the connectinghole of the body for pivoting the clutch swing bar which may swinghorizontally in the connecting hole of the body, the slide base isformed with a longitudinally extended cutout located between the twopivot ears, a guide rod has a first end inserted into the cutout of theslide base, and a second end screwed on a side face of the body, theclutch swing bar has a first end pivotally mounted between the two pivotears of the slide base, and a second end having a first side formed witha protruded stop portion and a second side formed with a protruded guideportion, the stop portion of the clutch swing bar has a free end formedwith a circular nose end, the guide portion of the clutch swing bar hasa free end pivoted with a roller, the stop portion of the clutch swingbar is rested on the end face of the breaking cylinder, and the rollerof the guide portion of the clutch swing bar is rested on the guide rodof the slide base.
 5. The breaker of a reinforced glass in accordancewith claim 2, wherein the breaking cylinder is slidably mounted in theguide groove and the through hole of the body, and has a closed firstend provided with a striking needle, and a second end having an outerperiphery formed with an annular locking flange that may be rested andlocked in the guide groove of the body, and the breaking cylinder has aninner portion formed with a chamber for receiving the strong springwhich is rested on a support plate.